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* [Bug tree-optimization/35494] New: [4.4 Regression]: Revision 132991 breaks 483.xalancbmk
@ 2008-03-07 6:07 hjl dot tools at gmail dot com
2008-03-07 7:02 ` [Bug tree-optimization/35494] " pinskia at gmail dot com
` (14 more replies)
0 siblings, 15 replies; 16+ messages in thread
From: hjl dot tools at gmail dot com @ 2008-03-07 6:07 UTC (permalink / raw)
To: gcc-bugs
Revision 132991:
http://gcc.gnu.org/ml/gcc-patches/2008-03/msg00445.html
breaks 483.xalancbmk in SPEC CPU 2006 on Linux/Intel64
with -O2 -ffast-math. I got
Running 483.xalancbmk ref base o2 default
483.xalancbmk: copy #0 non-zero return code (rc=0, signal=6)
****************************************
Contents of ref.err
****************************************
terminate called after throwing an instance of 'xercesc_2_5::DOMException'
****************************************
That optimization may not be valid for C++ code.
--
Summary: [4.4 Regression]: Revision 132991 breaks 483.xalancbmk
Product: gcc
Version: 4.4.0
Status: UNCONFIRMED
Severity: major
Priority: P3
Component: tree-optimization
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: hjl dot tools at gmail dot com
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35494
^ permalink raw reply [flat|nested] 16+ messages in thread
* [Bug tree-optimization/35494] [4.4 Regression]: Revision 132991 breaks 483.xalancbmk
2008-03-07 6:07 [Bug tree-optimization/35494] New: [4.4 Regression]: Revision 132991 breaks 483.xalancbmk hjl dot tools at gmail dot com
@ 2008-03-07 7:02 ` pinskia at gmail dot com
2008-03-07 9:09 ` rguenth at gcc dot gnu dot org
` (13 subsequent siblings)
14 siblings, 0 replies; 16+ messages in thread
From: pinskia at gmail dot com @ 2008-03-07 7:02 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from pinskia at gmail dot com 2008-03-07 07:01 -------
Subject: Re: New: [4.4 Regression]: Revision 132991 breaks 483.xalancbmk
This is most likely the c++ front-end setting readonly when it should
not.
Sent from my iPhone
On Mar 6, 2008, at 22:06, "hjl dot tools at gmail dot com"
<gcc-bugzilla@gcc.gnu.org
> wrote:
> Revision 132991:
>
> http://gcc.gnu.org/ml/gcc-patches/2008-03/msg00445.html
>
> breaks 483.xalancbmk in SPEC CPU 2006 on Linux/Intel64
> with -O2 -ffast-math. I got
>
> Running 483.xalancbmk ref base o2 default
>
> 483.xalancbmk: copy #0 non-zero return code (rc=0, signal=6)
>
>
> ****************************************
> Contents of ref.err
> ****************************************
> terminate called after throwing an instance of
> 'xercesc_2_5::DOMException'
>
> ****************************************
>
> That optimization may not be valid for C++ code.
>
>
> --
> Summary: [4.4 Regression]: Revision 132991 breaks
> 483.xalancbmk
> Product: gcc
> Version: 4.4.0
> Status: UNCONFIRMED
> Severity: major
> Priority: P3
> Component: tree-optimization
> AssignedTo: unassigned at gcc dot gnu dot org
> ReportedBy: hjl dot tools at gmail dot com
>
>
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35494
>
> ------- You are receiving this mail because: -------
> You are on the CC list for the bug, or are watching someone who is.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35494
^ permalink raw reply [flat|nested] 16+ messages in thread
* [Bug tree-optimization/35494] [4.4 Regression]: Revision 132991 breaks 483.xalancbmk
2008-03-07 6:07 [Bug tree-optimization/35494] New: [4.4 Regression]: Revision 132991 breaks 483.xalancbmk hjl dot tools at gmail dot com
2008-03-07 7:02 ` [Bug tree-optimization/35494] " pinskia at gmail dot com
@ 2008-03-07 9:09 ` rguenth at gcc dot gnu dot org
2008-03-07 13:55 ` hjl dot tools at gmail dot com
` (12 subsequent siblings)
14 siblings, 0 replies; 16+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2008-03-07 9:09 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from rguenth at gcc dot gnu dot org 2008-03-07 09:08 -------
Will probably happen in cases like
static const int i = foo();
?
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35494
^ permalink raw reply [flat|nested] 16+ messages in thread
* [Bug tree-optimization/35494] [4.4 Regression]: Revision 132991 breaks 483.xalancbmk
2008-03-07 6:07 [Bug tree-optimization/35494] New: [4.4 Regression]: Revision 132991 breaks 483.xalancbmk hjl dot tools at gmail dot com
2008-03-07 7:02 ` [Bug tree-optimization/35494] " pinskia at gmail dot com
2008-03-07 9:09 ` rguenth at gcc dot gnu dot org
@ 2008-03-07 13:55 ` hjl dot tools at gmail dot com
2008-03-07 14:04 ` hjl dot tools at gmail dot com
` (11 subsequent siblings)
14 siblings, 0 replies; 16+ messages in thread
From: hjl dot tools at gmail dot com @ 2008-03-07 13:55 UTC (permalink / raw)
To: gcc-bugs
------- Comment #3 from hjl dot tools at gmail dot com 2008-03-07 13:54 -------
Are
bash-3.2$ cat y.cc
class bar
{
public:
static const int conststaticvariable;
};
int f(void)
{
return bar::conststaticvariable;
}
bash-3.2$ cat z.cc
extern int foo (void);
class bar
{
public:
static const int conststaticvariable;
};
const int bar::conststaticvariable = foo ();
bash-3.2$
valid C++ program?
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35494
^ permalink raw reply [flat|nested] 16+ messages in thread
* [Bug tree-optimization/35494] [4.4 Regression]: Revision 132991 breaks 483.xalancbmk
2008-03-07 6:07 [Bug tree-optimization/35494] New: [4.4 Regression]: Revision 132991 breaks 483.xalancbmk hjl dot tools at gmail dot com
` (2 preceding siblings ...)
2008-03-07 13:55 ` hjl dot tools at gmail dot com
@ 2008-03-07 14:04 ` hjl dot tools at gmail dot com
2008-03-07 14:23 ` rguenther at suse dot de
` (10 subsequent siblings)
14 siblings, 0 replies; 16+ messages in thread
From: hjl dot tools at gmail dot com @ 2008-03-07 14:04 UTC (permalink / raw)
To: gcc-bugs
------- Comment #4 from hjl dot tools at gmail dot com 2008-03-07 14:03 -------
(In reply to comment #1)
> Subject: Re: New: [4.4 Regression]: Revision 132991 breaks 483.xalancbmk
>
> This is most likely the c++ front-end setting readonly when it should
> not.
>
I think you should check a symbol is both readonly and local.
conststaticvariable in
---
class bar
{
public:
static const int conststaticvariable;
};
---
is global, not local.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35494
^ permalink raw reply [flat|nested] 16+ messages in thread
* [Bug tree-optimization/35494] [4.4 Regression]: Revision 132991 breaks 483.xalancbmk
2008-03-07 6:07 [Bug tree-optimization/35494] New: [4.4 Regression]: Revision 132991 breaks 483.xalancbmk hjl dot tools at gmail dot com
` (3 preceding siblings ...)
2008-03-07 14:04 ` hjl dot tools at gmail dot com
@ 2008-03-07 14:23 ` rguenther at suse dot de
2008-03-07 14:25 ` hjl dot tools at gmail dot com
` (9 subsequent siblings)
14 siblings, 0 replies; 16+ messages in thread
From: rguenther at suse dot de @ 2008-03-07 14:23 UTC (permalink / raw)
To: gcc-bugs
------- Comment #5 from rguenther at suse dot de 2008-03-07 14:22 -------
Subject: Re: [4.4 Regression]: Revision 132991
breaks 483.xalancbmk
On Fri, 7 Mar 2008, hjl dot tools at gmail dot com wrote:
> ------- Comment #4 from hjl dot tools at gmail dot com 2008-03-07 14:03 -------
> (In reply to comment #1)
> > Subject: Re: New: [4.4 Regression]: Revision 132991 breaks 483.xalancbmk
> >
> > This is most likely the c++ front-end setting readonly when it should
> > not.
> >
>
> I think you should check a symbol is both readonly and local.
> conststaticvariable in
>
> ---
> class bar
> {
> public:
> static const int conststaticvariable;
> };
> ---
>
> is global, not local.
Yep, and yes, the example was valid.
Richard.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35494
^ permalink raw reply [flat|nested] 16+ messages in thread
* [Bug tree-optimization/35494] [4.4 Regression]: Revision 132991 breaks 483.xalancbmk
2008-03-07 6:07 [Bug tree-optimization/35494] New: [4.4 Regression]: Revision 132991 breaks 483.xalancbmk hjl dot tools at gmail dot com
` (4 preceding siblings ...)
2008-03-07 14:23 ` rguenther at suse dot de
@ 2008-03-07 14:25 ` hjl dot tools at gmail dot com
2008-03-07 14:40 ` hjl dot tools at gmail dot com
` (8 subsequent siblings)
14 siblings, 0 replies; 16+ messages in thread
From: hjl dot tools at gmail dot com @ 2008-03-07 14:25 UTC (permalink / raw)
To: gcc-bugs
------- Comment #6 from hjl dot tools at gmail dot com 2008-03-07 14:24 -------
This patch
--- tree-ssa-ccp.c.local 2008-03-06 14:18:27.000000000 -0800
+++ tree-ssa-ccp.c 2008-03-07 06:21:57.000000000 -0800
@@ -306,9 +306,10 @@ get_symbol_constant_value (tree sym)
if (val
&& ccp_decl_initial_min_invariant (val))
return val;
- /* Variables declared 'const' without an initializer
+ /* Local variables declared 'const' without an initializer
have zero as the intializer. */
if (!val
+ && !TREE_PUBLIC (sym)
&& (INTEGRAL_TYPE_P (TREE_TYPE (sym))
|| SCALAR_FLOAT_TYPE_P (TREE_TYPE (sym))))
return fold_convert (TREE_TYPE (sym), integer_zero_node);
works on small C++ testcase. I will try 483.xalancbmk next.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35494
^ permalink raw reply [flat|nested] 16+ messages in thread
* [Bug tree-optimization/35494] [4.4 Regression]: Revision 132991 breaks 483.xalancbmk
2008-03-07 6:07 [Bug tree-optimization/35494] New: [4.4 Regression]: Revision 132991 breaks 483.xalancbmk hjl dot tools at gmail dot com
` (5 preceding siblings ...)
2008-03-07 14:25 ` hjl dot tools at gmail dot com
@ 2008-03-07 14:40 ` hjl dot tools at gmail dot com
2008-03-07 14:57 ` hjl dot tools at gmail dot com
` (7 subsequent siblings)
14 siblings, 0 replies; 16+ messages in thread
From: hjl dot tools at gmail dot com @ 2008-03-07 14:40 UTC (permalink / raw)
To: gcc-bugs
------- Comment #7 from hjl dot tools at gmail dot com 2008-03-07 14:39 -------
My patch works on 483.xalancbmk with test input. I am running with
ref input.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35494
^ permalink raw reply [flat|nested] 16+ messages in thread
* [Bug tree-optimization/35494] [4.4 Regression]: Revision 132991 breaks 483.xalancbmk
2008-03-07 6:07 [Bug tree-optimization/35494] New: [4.4 Regression]: Revision 132991 breaks 483.xalancbmk hjl dot tools at gmail dot com
` (6 preceding siblings ...)
2008-03-07 14:40 ` hjl dot tools at gmail dot com
@ 2008-03-07 14:57 ` hjl dot tools at gmail dot com
2008-03-07 15:18 ` hjl dot tools at gmail dot com
` (6 subsequent siblings)
14 siblings, 0 replies; 16+ messages in thread
From: hjl dot tools at gmail dot com @ 2008-03-07 14:57 UTC (permalink / raw)
To: gcc-bugs
------- Comment #8 from hjl dot tools at gmail dot com 2008-03-07 14:56 -------
Another testcase in C:
---
const int conststaticvariable;
int f(void)
{
return conststaticvariable;
}
---
Can we assume conststaticvariable will be 0?
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35494
^ permalink raw reply [flat|nested] 16+ messages in thread
* [Bug tree-optimization/35494] [4.4 Regression]: Revision 132991 breaks 483.xalancbmk
2008-03-07 6:07 [Bug tree-optimization/35494] New: [4.4 Regression]: Revision 132991 breaks 483.xalancbmk hjl dot tools at gmail dot com
` (7 preceding siblings ...)
2008-03-07 14:57 ` hjl dot tools at gmail dot com
@ 2008-03-07 15:18 ` hjl dot tools at gmail dot com
2008-03-07 15:21 ` rguenther at suse dot de
` (5 subsequent siblings)
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From: hjl dot tools at gmail dot com @ 2008-03-07 15:18 UTC (permalink / raw)
To: gcc-bugs
------- Comment #9 from hjl dot tools at gmail dot com 2008-03-07 15:17 -------
A patch is posted at
http://gcc.gnu.org/ml/gcc-patches/2008-03/msg00466.html
--
hjl dot tools at gmail dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
URL| |http://gcc.gnu.org/ml/gcc-
| |patches/2008-
| |03/msg00466.html
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35494
^ permalink raw reply [flat|nested] 16+ messages in thread
* [Bug tree-optimization/35494] [4.4 Regression]: Revision 132991 breaks 483.xalancbmk
2008-03-07 6:07 [Bug tree-optimization/35494] New: [4.4 Regression]: Revision 132991 breaks 483.xalancbmk hjl dot tools at gmail dot com
` (8 preceding siblings ...)
2008-03-07 15:18 ` hjl dot tools at gmail dot com
@ 2008-03-07 15:21 ` rguenther at suse dot de
2008-03-10 14:51 ` [Bug tree-optimization/35494] [4.4 Regression]: Revision 132991 breaks C++ static member hjl dot tools at gmail dot com
` (4 subsequent siblings)
14 siblings, 0 replies; 16+ messages in thread
From: rguenther at suse dot de @ 2008-03-07 15:21 UTC (permalink / raw)
To: gcc-bugs
------- Comment #10 from rguenther at suse dot de 2008-03-07 15:20 -------
Subject: Re: [4.4 Regression]: Revision 132991
breaks 483.xalancbmk
On Fri, 7 Mar 2008, hjl dot tools at gmail dot com wrote:
>
>
> ------- Comment #8 from hjl dot tools at gmail dot com 2008-03-07 14:56 -------
> Another testcase in C:
>
> ---
> const int conststaticvariable;
>
> int f(void)
> {
> return conststaticvariable;
> }
> ---
>
> Can we assume conststaticvariable will be 0?
No.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35494
^ permalink raw reply [flat|nested] 16+ messages in thread
* [Bug tree-optimization/35494] [4.4 Regression]: Revision 132991 breaks C++ static member
2008-03-07 6:07 [Bug tree-optimization/35494] New: [4.4 Regression]: Revision 132991 breaks 483.xalancbmk hjl dot tools at gmail dot com
` (9 preceding siblings ...)
2008-03-07 15:21 ` rguenther at suse dot de
@ 2008-03-10 14:51 ` hjl dot tools at gmail dot com
2008-03-10 16:21 ` hjl dot tools at gmail dot com
` (3 subsequent siblings)
14 siblings, 0 replies; 16+ messages in thread
From: hjl dot tools at gmail dot com @ 2008-03-10 14:51 UTC (permalink / raw)
To: gcc-bugs
------- Comment #11 from hjl dot tools at gmail dot com 2008-03-10 14:50 -------
The current patch is
http://gcc.gnu.org/ml/gcc-patches/2008-03/msg00572.html
--
hjl dot tools at gmail dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
URL|http://gcc.gnu.org/ml/gcc- |http://gcc.gnu.org/ml/gcc-
|patches/2008- |patches/2008-
|03/msg00466.html |03/msg00572.html
Summary|[4.4 Regression]: Revision |[4.4 Regression]: Revision
|132991 breaks 483.xalancbmk |132991 breaks C++ static
| |member
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35494
^ permalink raw reply [flat|nested] 16+ messages in thread
* [Bug tree-optimization/35494] [4.4 Regression]: Revision 132991 breaks C++ static member
2008-03-07 6:07 [Bug tree-optimization/35494] New: [4.4 Regression]: Revision 132991 breaks 483.xalancbmk hjl dot tools at gmail dot com
` (10 preceding siblings ...)
2008-03-10 14:51 ` [Bug tree-optimization/35494] [4.4 Regression]: Revision 132991 breaks C++ static member hjl dot tools at gmail dot com
@ 2008-03-10 16:21 ` hjl dot tools at gmail dot com
2008-03-10 18:21 ` hjl at gcc dot gnu dot org
` (2 subsequent siblings)
14 siblings, 0 replies; 16+ messages in thread
From: hjl dot tools at gmail dot com @ 2008-03-10 16:21 UTC (permalink / raw)
To: gcc-bugs
------- Comment #12 from hjl dot tools at gmail dot com 2008-03-10 16:20 -------
The current patch is
http://gcc.gnu.org/ml/gcc-patches/2008-03/msg00631.html
--
hjl dot tools at gmail dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
URL|http://gcc.gnu.org/ml/gcc- |http://gcc.gnu.org/ml/gcc-
|patches/2008- |patches/2008-
|03/msg00572.html |03/msg00631.html
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35494
^ permalink raw reply [flat|nested] 16+ messages in thread
* [Bug tree-optimization/35494] [4.4 Regression]: Revision 132991 breaks C++ static member
2008-03-07 6:07 [Bug tree-optimization/35494] New: [4.4 Regression]: Revision 132991 breaks 483.xalancbmk hjl dot tools at gmail dot com
` (11 preceding siblings ...)
2008-03-10 16:21 ` hjl dot tools at gmail dot com
@ 2008-03-10 18:21 ` hjl at gcc dot gnu dot org
2008-03-10 18:22 ` hjl dot tools at gmail dot com
2008-03-11 11:49 ` pinskia at gcc dot gnu dot org
14 siblings, 0 replies; 16+ messages in thread
From: hjl at gcc dot gnu dot org @ 2008-03-10 18:21 UTC (permalink / raw)
To: gcc-bugs
------- Comment #13 from hjl at gcc dot gnu dot org 2008-03-10 18:21 -------
Subject: Bug 35494
Author: hjl
Date: Mon Mar 10 18:20:23 2008
New Revision: 133082
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=133082
Log:
gcc/
2008-03-10 H.J. Lu <hongjiu.lu@intel.com>
PR tree-optimization/35494
* tree-ssa-ccp.c (get_symbol_constant_value): Check if value
may be overriden at link and run time.
gcc/testsuite/
2008-03-10 H.J. Lu <hongjiu.lu@intel.com>
PR tree-optimization/35494
* g++.dg/tree-ssa/ssa-store-ccp-1.C: New.
* gcc.dg/tree-ssa/ssa-store-ccp-2.c: Likewise.
* gcc.dg/tree-ssa/ssa-store-ccp-3.c: Likewise.
* gcc.dg/tree-ssa/ssa-store-ccp-4.c: Likewise.
Added:
trunk/gcc/testsuite/g++.dg/tree-ssa/ssa-store-ccp-1.C
trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-store-ccp-2.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-store-ccp-3.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-store-ccp-4.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-ssa-ccp.c
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35494
^ permalink raw reply [flat|nested] 16+ messages in thread
* [Bug tree-optimization/35494] [4.4 Regression]: Revision 132991 breaks C++ static member
2008-03-07 6:07 [Bug tree-optimization/35494] New: [4.4 Regression]: Revision 132991 breaks 483.xalancbmk hjl dot tools at gmail dot com
` (12 preceding siblings ...)
2008-03-10 18:21 ` hjl at gcc dot gnu dot org
@ 2008-03-10 18:22 ` hjl dot tools at gmail dot com
2008-03-11 11:49 ` pinskia at gcc dot gnu dot org
14 siblings, 0 replies; 16+ messages in thread
From: hjl dot tools at gmail dot com @ 2008-03-10 18:22 UTC (permalink / raw)
To: gcc-bugs
------- Comment #14 from hjl dot tools at gmail dot com 2008-03-10 18:21 -------
Fixed.
--
hjl dot tools at gmail dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution| |FIXED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35494
^ permalink raw reply [flat|nested] 16+ messages in thread
* [Bug tree-optimization/35494] [4.4 Regression]: Revision 132991 breaks C++ static member
2008-03-07 6:07 [Bug tree-optimization/35494] New: [4.4 Regression]: Revision 132991 breaks 483.xalancbmk hjl dot tools at gmail dot com
` (13 preceding siblings ...)
2008-03-10 18:22 ` hjl dot tools at gmail dot com
@ 2008-03-11 11:49 ` pinskia at gcc dot gnu dot org
14 siblings, 0 replies; 16+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2008-03-11 11:49 UTC (permalink / raw)
To: gcc-bugs
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |4.4.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35494
^ permalink raw reply [flat|nested] 16+ messages in thread
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